(19)

(11)

EP 4 048 765 A1

(12)

(43) Date of publication: 31.08.2022 Bulletin 2022/35 (21) Application number: 20830184.6 (22) Date of filing: 17.12.2020

(51) International Patent Classification (IPC):  C11B 9/00(2006.01) C07D 313/00(2006.01) (52) Cooperative Patent Classification (CPC): C11B 9/0084; C07D 313/00 (86) International application number: PCT/EP2020/086703 (87) International publication number: WO 2021/122945 (24.06.2021 Gazette 2021/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 20.12.2019 EP 19218958 (71) Applicant: Firmenich SA 1242 Satigny (CH)	(72) Inventors: BIRKBECK, Anthony, Alexander 1242 Satigny (CH) MADDALENA, Umberto 1242 Satigny (CH) (74) Representative: Lavy, Séverine  Firmenich SA Corporate Legal & Compliance - IP Group 7, rue de la Bergère 1242 Satigny 1242 Satigny (CH)